<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="signal-invoice-location-id" />
  <url value="https://signalbhn.org/fhir/StructureDefinition/SignalInvoiceLocationID" />
  <name value="SignalInvoiceLocationID" />
  <status value="draft" />
  <description value="Need extension for LocationId field in invoice resource to store string values." />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="Invoice" />
  </context>
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="https://signalbhn.org/fhir/StructureDefinition/SignalInvoiceLocationID" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <short value="LocationId field in invoice" />
      <definition value="Need extension for LocationId field in invoice resource to store string values." />
      <type>
        <code value="Identifier" />
      </type>
    </element>
  </differential>
</StructureDefinition>